XC9119 DCDC升压芯片

XC9119D10A Series

1MHz, PWM Controlled,

Step-Up DC/DC Converter, Ceramic Capacitor Compatible

ETR0408_008

■GENERAL DESCRIPTION

The XC9119D10A series is 1MHz, PWM controlled step-up DC/DC converter, designed to allow the use of ceramic capacitors. With a built-in 2.0Ω switching transistor, the XC9119D10A series can easily provide a step-up operation by using only a coil, a diode, a capacitor, and a resistor, connected externally.

Since output voltage up to 19.5V (Maximum Lx operating voltage: 20V) can be derived with reference voltage supply of 1.0V (±2.0%) and external components, the series can easily supply high voltage for various general-purpose power supplies, LCD panels and organic EL displays.

With a high switching frequency of 1.0MHz, a low profile and small board area solution can be achieved using a chip coil and

an ultra small ceramic output capacitor.

With the current limit function (400mA (TYP.): VDD=3.6V), a peak current, which flows through built-in driver transistors can be

limited. Soft-start time can be adjusted by external resistors and capacitors. The stand-by function enables the output to

be turned off (CE ’L’), that is, the supply current will be less than 1.0 A.

■APPLICATIONS

●Organic electroluminescence display (OELD)●Power supplies for LCDs ●Multi-function power supplies

■FEATURES

Operating Voltage Range : 2.5V ~ 6.0V Output Voltage Range

: Up to 19.5V externally set-up : Reference voltage 1.0V +2.0%

Oscillation Frequency : 1.0MHz±20%

ON Resistance : 2.0Ω (VDD=3.6V, VDS=0.4V) Efficiency : 86%

(VOUT=15V, VDD=3.6V, IOUT=10mA)

Control : PWM control Stand-by function : ISTB=1.0 A (MAX.)

Load Capacitor : Low ESR ceramic capacitor

Ultra Small Packages : SOT-25, USP-6C Lx Limit Current : 400mA (VDD=3.6V)

■TYPICAL APPLICATION CIRCUIT

■TYPICAL PERFORMANCE CHARACTERISTICS

○Efficiency vs. Output Current

XC9119D10A

1009080706050403020100

0.1

1

Efficiency: EFFI(%)

101001000

Output Current: IOUT (mA)

1/18

■PIN CONFIGURATION

*The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat resistance. If the pad needs to be connected to other pins, it

pin. should be connected to the VSS

SOT-25

(TOP VIEW)

USP-6C

(BOTTOM VIEW)

■PIN ASSIGNMENT

PIN NUMBER SOT-25 USP-6C

4 6

PIN NAME

FUNCTION

Switch

VSSVoltage CE/SS Chip Enable/ Soft Start

VDDNo Connection

■CE PIN FUNCTION

CE/SS PIN

OPERATIONAL STATE

■PRODUCT CLASSIFICATION

●Ordering Information

(*1)

XC9119D①②③④⑤-⑥

DESIGNATOR DESCRIPTION Reference Voltage Oscillation Frequency

SYMBOL

10 A

FB voltage 1MHz

DESCRIPTION

①② ③

④⑤-⑥

Packages Taping Type

(*2)

MR-G SOT-25 (Halogen & Antimony free)

ER-G

USP-6C (Halogen & Antimony free)

(*1)

The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHScompliant. (*2)

The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your localTorex sales office or representative. (Standard orientation: ④R-⑥, Reverse orientation: ④L-⑥)

2/18

XC9119D10A

Series

■BLOCK DIAGRAM

VDDFB

LX

VSS

■ABSOLUTE MAXIMUM RATINGS

PARAMETER VDD Pin Voltage Lx Pin Voltage FB Pin Voltage CE Pin Voltage Lx Pin Current

Power Dissipation

SYMBOL VDD VLx VFB VCE

RATINGS VSS – 0.3 ~ 7.0 VSS – 0.3 ~ 22.0 VSS – 0.3 ~ 7.0 VSS – 0.3 ~ 7.0

Ta = 25OC UNITS

V V V V

ILx

Pd mW

USP-6C 120

Topr Tstg

- 40 ~ + 85 - 55 ~ +125

O

Operating Temperature Range Storage Temperature Range

C C

O

3/18

■ELECTRICAL CHARACTERISTICS

XC9119D10AMR

PARAMETER FB Voltage Line Regulation Supply Voltage Operation Start-up

Voltage

Supply Current 1 Supply Current 2 Stand-by Current Oscillation Frequency Maximum Duty Ratio

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

Ta = 25OC

CIRCUI

UNIT

T

VFB0.980① △VFB/

VDD①

△VIN VFB

VDD① VST1 IDD1 IDD2 ISTB fOSC

MAXDTY

IOUT② FB=2.0V

μA ② μA ②

VCEμA ③ Same as IDD1MHz② Same as IDD1 ② VIN=VDD=3.6V, VOUT=15V,

① Efficiency IOUT=10mA

Current Limit ILIM VDD④ Lx Operating Voltage

VLx VOUT①

Range

Lx Switch On Resistance RSWON VDD=3.6V, VLx=0.4V, Rpull=10ΩΩ ②

Lx Leak Current ILxL Same as ISTB μA ③

Applied voltage to CE when Lx pin

CE “High” Voltage VCEH ②

voltage holding “H””L” level Applied voltage to CE when Lx pin

CE “Low” Voltage VCEL ②

voltage holding “H” level

Soft-Start FB=0.95V, Applied voltage to CE

VSST ②

when Lx voltage holding “H””L” levelThreshold Voltage

CE “High” Current ICEH Same as IDD2μA ③ CE “Low” Current ICEL Same as ISTBμA ③ FB “High” Current IFBH Same as IDD2μA ③ FB “Low” Current IFBL Same as ISTBμA ③

Test Condition: Unless otherwise stated, VIN=3.0V, VCE=3.0V, Vpull=5.0V, Rpull=100Ω.

NOTE:

*1: EFFI={(output voltage x output current) / (input voltage) x (input current)} x 100

VINVOUT■TYPICAL APPLICATION CIRCUIT

4/18

XC9119D10A

Series

■OPERATIONAL EXPLANATION

The XC9119D10A series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM c …… 此处隐藏：16620字，全部文档内容请下载后查看。喜欢就下载吧 ……